Method of making corner members



Au 12, 1941. F, w, DAM 2,252,539

' METHOD OF MAKING CORNER MEMBERS Filed July 1:5. 19:58

' INVENTOR F1. an: Fan/us.

I ATTORN r Patented Atg. 12, 1941 METHOD OF MAKING CORNER MEMBERS Floyd W. Adams,'Metuchcn, N. 1., assignor toTIle Celotex Corporation, Chicago, 111., a corporation of Delaware Application July 13, 1938, Serial No. 218,989 1 Claim. (Cl. 154-2) In connectionwith the manufacture and use of products as siding for structures it is contemplated that such products may be manufactured of a base of fibre insulating board or like material so that relatively large units may be employed whereby the number of edge joints may be minimized, there may be provided in connection with such materials thermal'insulation achieved through the use of the fibre insulating board as a basematerial and other advantages, which will become apparent in view of the subsequent disclosure herein, will be derived therefrom.

Siding products in accordance with the disclosure hereof may be briefly described as comprising a base of fibre insulating board or equivalent material, on one face of which, at least, there is applied a coating of adhesive substance which may, conveniently be a bituminous substance such as asphalt or the like, or may be a suitable pitch or resin or other adhesive or binder which is relatively weather-resistant and has high adherence. To such adhesive coating when applied to the surface of the base material thereis applied a suitable 'granularsubstance such as crushed slate, sand, crushed brick or other more or less similar suitable granular material which may be of suitable coarseness. If the granular material .is relatively coarse, that is, of about that coarseness of the granular material ordinarily applied to roll roofing, the finished sur.- face will of course be relatively rough and irregular or if the granular material is finely gi anulated to the order of a dust then the sur-' face provided will be relatively smooth and for example, if a brick dust is used, the finished surface will approximate the appearance and texture of brick.

' In connection with the use of products such as has been above generally described, it is necessary in order that a pleasing appearance may be achieved in theapplication thereof, that there shall be provided corner members which are preformed since it is substantially impossible toobtain a satisfactory corner finish by abutting units at a corner, irrespective of whether such units are merely lapped, or whether an attempt is made to bevel the edges of the units to form amltered joint at' thecorner. I

It is the particular object of this invention to provide a comer unit for use in connection with a mineral surfaced fibre insulating board orthe like designed for wall construction, wherein the such corner piece is prefabricated so as to'simu-'- late the appearance of a continuous or unbroken corn'er such as is normally obtained with brick or masonry wall construction? It is a further object of this invention to provide a novel method of manufacturing a continuous, pre-fabricated corner member, such as has been herein disclosed and still further objects and advantages of the invention hereof will become apparent upon consideration of the following description of the invention when taken in connection with the accompanying drawing.

In the drawing:

Figure l is a cross-section of portions of two pieces of base material for a corner unit;

Figure 2-is a cross-sectional view similar to Figure 1 but showing the application of a strip of material serving to connect the individual pieces together;

Figure 3 is another cross-section such as is illustrated in Figure 2, but further illustrating the application of a coating of adhesive to a, surface of the material; 7

Figure 4 is a cross-sectional view illustrating a step subsequent to that shown in Figure 3, that is, illustrating a granular material applied to the coating of adhesive substance indicated in Figure 3;

' Figure 5 is an enlarged cross-section taken on line 5-5 of Figure 6; and

Figure 6 is a perspective view of a portion of a finished corner unit.

In each of the figures of the drawing similar reference numerals will be used to indicate likeparts in the various views.

In the drawing, in Figure 1 there are illustrated two separate pieces of fibre insulating board or other suitable sheet form base material which separate pieces of the base material are indiare brought together the desired be obtained.

cated by the numerals I0 and l I. The two pieces of the base'material are indicated as lying side by side in a plane and slightly spaced and as having their contiguous edges bevelled rearward-'- ly from faces I! and I3 toward faces I4 and I5, at an angle, which for each of the separate pieces is illustrated as an angle of 45 degrees, thereby providing contiguous bevelled edges I6 and I1. It is to be understood that if the, corner piece is to be used to form a corner piece other than a right angular corner that the bevels l6 and I! will be at suitable angles with respect to the front faces I2 and I3, so that when such bevels ,a'ngularity will As the first step in the process of forming the desired finished corner piecesthe two separate thereof indicated forexample may be a bituminous material, or

thereof. toward one another so as-to bring the portions l and H of thebase material to a right I angle, one with respect to the other, or to such other angle as is .provided for by the bevels I6 and I! as has been described and to bring the such bevelled portions i6 and I1 into contact one with the other. In bending or folding the processed material illustrated in Fig re 4 the strip of fabric or like material laserves a a hinge a pitch, or any other suitable adhesive or binding substance. strip of fabric or felt or like material is shown as adhered to the surfaces l2 and I3 to secure the base members It! and H together with the apices. of their bevels in substantial contact as.

In the drawing, Figure 2, the

member and furthermore due to the fact that this strip extends outwardly on each side ,from the meeting edges of surfaces I2 and I3 the finished surface shown in Figure 4 is continuous around the exterior corner formed by the dehas been described and is indicated by the numeral I8.

As the next step in the process the entire upper surface of the assemblage illustrated and described, in connection with the showing of Figure 2, is coated with adhesive or binder substance indicated on the drawing by numeral IS. The coating of adhesive orbinder substance l9 applied over the surface of the heretofore described assemblage may conveniently be a bituminous substance, that is, an asphaltic material, or suitable pitch, or synthetic resin or other suitable binder or adhesive substance which is highly resistant to deterioration when subjected to the elements.

The next subsequent step in the process of the preparation of the desired units is illustrated in Figure 4, wherein there is illustrated as applied to and imbedded in the adhesive or hinder coating IS a suitable granular substance, which, as hereinbefore mentioned may be roughly granular or which may approach a dust dependent upon th desired appearance of the finished product, the granular material being indicated in Figure 4 by the numeral 20.

In connection with the above, described base material for the formation of the desired corner members, it is to I e understood that for the purpose of weatherooflng the entire finished unit that the indi ual and separate sheets comprising the base members It) and H which are processed, as has been described, may be initially entirely water-proofed or weather- Figured is shown as having along the upper edge proofed by' coating with a relatively thin layer' of water-proofing such as a bituminous substance,

as asphalt for example, or by coating with a suitable pitch or weather resistant resin or the like.

- It is of course who understood that the weather resistant coating just referred to may be applied by dipping the individual units l0 and l 1 into the coating material or they may be coated by spraying the said substances upon the surfaces thereof or that any other suitable methods may be utilized for achieving the desired result. In coating the units as described, it may be that it is unnecessary to, or undesirable, that the surface If and I3 thereof be coated since there is sub sequently to be appliedto such surfaces the'coating I! which serves to adhere the granular coating 2|! to the face of the unit and it is to of course be understood that in coating the base portions l0 and II it will be in some cases unnecessary or undesirable to coat those faces by l2 and I3.

Following the operations in the preparation of the base material as has been above described, the next step in the formation of a corner piece is to bend or fold the two portions [0 and II scribed-bending or folding of the processed sheet.

The corner whenbent or folded to shape as described may have secured interiorly thereof a reinforcing and securing corner strip, of fabric or other suitable material, such as 2| which will of course be secured in place by a suitable adhesive.

The formed corner piece as illustrated in thereof an upwardly extending flange portion 22, which it will of course beunderstood is preferable provided along the appropriate edges of the individual portions [0 and II of the base material prior to the various steps of the process of producing corner members ashas been herein specifically illustrated. It will of course be un-. derstood that the lower edge of a corner unit will be suitably rabbetted to complement a similar flange 22 of an adjacent corner unit. Also it is to beunderstood that if desired the side edges of a corner unit as distinguished from the top and bottom edges may -be' formed with complementary flange and rabbet to form closed joints at the edges when associated with complementing flat sheets of similarly surfaced base material.

In applying the granular material 20 to the surface coating l9 which is applied to the faces of the assembled units I0 and .l I, it is to be understood that such granular material may have impressed therein a mortar joint pattern or the like to provide a surface simulating bricks, or masonry, or the like or that the granular material may be so applied to the coating that a simulation of brick or the like is achieved.

From a consideration of the above description it will be readily seen that there has been herein described a process whereby there may be constructed corner members for use in applying relatively thin external coverings on structures which corner members due to the particular method of construction are thoroughly reinforced at the corners and are continuous around the corners whereby the finished corner is sealed and there is no tendency for' the joint to be-open or irregular as would be the case where surfaced members merely brought to the corner in overlapped abutting relation-or in bevelled contact.

It will be further seen that the inventions hereof'provide a novel method for obtaining a continuous coating acrossthe entire surface of the described corner The inventions hereof having been described in detail, lclaiin:

The methodof formation of an external structural corner member. wherein the initial steps of preparation are carried out on sheet material arranged flatwise, which material without intervening fabrication is folded to form a corner member and which comprises the successive steps: bringing two separate suitably edge beveled base sheets into co-planar relation and in substantially edge to edge contact to provide a V-shaped recess between the sheets, securing the sheets one to the other in such relation by means of a thin flexible strip adhered over and adjacent the line of edge contact of the sheets,

10 relation.

FLOYD W. ADAMS. 

